The TVTropes Trope Finder is where you can come to ask questions like "Do we have this one?" and "What's the trope about...?" Trying to rediscover a long lost show or other medium but need a little help? Head to Media Finder and try your luck there. Want to propose a new trope? You should be over at You Know, That Thing Where.
Nothing?
My latest Trope page: Shapeshifting FailureI feel certain we've got it, but if something doesn't come up soon, take it to YMMV. We should have this trope, if only because you see it all the time in older murder mysteries (e.g. the killer breaks the victim's watch to suggest a different time of death). Granted, it's a slightly Discredited Trope in the era of cellphones/smartphones
I think I will take it to YKTTW
My latest Trope page: Shapeshifting Failure
Any tropes on stopped clocks? Generally it is to show a disaster has broken them or cut the power.